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"
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COPYRIGHT (c) 1989 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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Object subclass:#MiniInspector
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instanceVariableNames:'inspectedObject'
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classVariableNames: ''
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poolDictionaries:''
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category:'System-Support'
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!
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MiniInspector comment:'
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COPYRIGHT (c) 1989 by Claus Gittinger
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All Rights Reserved
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a primitive (non graphical) inspector for use on systems without
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graphics or when the real inspector dies.
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74
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$Header: /cvs/stx/stx/libbasic/MiniInspector.st,v 1.5 1994-03-30 10:29:13 claus Exp $
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'!
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!MiniInspector class methodsFor:'instance creation'!
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openOn:anObject
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|anInspector|
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anInspector := (self new) initializeFor:anObject.
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anInspector enter
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! !
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!MiniInspector methodsFor:'private'!
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initializeFor:anObject
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inspectedObject := anObject.
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^self
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!
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enter
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self commandLoop.
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^ nil
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!
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commandLoop
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|cmd done valid|
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'Inspector:' printNewline.
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' ' printNewline.
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done := false.
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[done] whileFalse:[
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valid := false.
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cmd := self getCommand.
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(cmd == $0) ifTrue:[
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valid := true.
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self inspectInstvar:0 of:inspectedObject
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].
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(cmd == $1) ifTrue:[
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valid := true.
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self inspectInstvar:1 of:inspectedObject
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].
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(cmd == $2) ifTrue:[
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valid := true.
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self inspectInstvar:2 of:inspectedObject
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].
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(cmd == $3) ifTrue:[
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valid := true.
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self inspectInstvar:3 of:inspectedObject
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].
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(cmd == $i) ifTrue:[
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valid := true.
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self printInstVarsOf:inspectedObject
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].
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(cmd == $p) ifTrue:[
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valid := true.
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inspectedObject printNewline
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].
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(cmd == $q) ifTrue:[valid := true. done := true ].
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valid ifFalse: [
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'valid commands:
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(i)nstvars
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(p)rint
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(1-9) inspect instvar
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(q)uit' errorPrintNewline
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1
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]
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].
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^ cmd
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!
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getCommand
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|cmd c|
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'inspector> ' print.
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cmd := Character fromUser.
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c := cmd.
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[ c isEndOfLineCharacter ] whileFalse: [
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c := Character fromUser
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].
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^ cmd
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!
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printInstVarsOf:anObject
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|n|
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n := anObject class instSize.
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'number of instvars: ' print. n printNewline.
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1 to:n do:[:i |
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' ' print. i print. ': ' print.
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(anObject instVarAt:i) printNewline
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]
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!
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inspectInstvar:which of:anObject
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which > (anObject class instSize) ifTrue:[
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'invalid instvar' printNewline
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] ifFalse: [
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(anObject instVarAt:which) inspect
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]
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! !
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